The Foba ROBAE Short Pantograph allows you to easily adjust the height of the lamp according to your preference. It features a friction clamp and an adjustable hover load.To regulate the lamp, you can extend this short pantograph from 10.6" - 6.6'The load hover capacity of this pantograph can be adjusted from 2.2 - 26.5 lbsIf you are planning for heavier loads, then include the ROSAO or ROSAE Counterbalance SpringThe Foba ROBAE Short Pantograph weighs up to 10.8 lbs